Polymer pencil leads as a porous nanocomposite graphite
material for electrochemical applications: The impact of
chemical and thermal treatments

J 2021

Polymer pencil leads as a porous nanocomposite graphite material for electrochemical applications: The impact of chemical and thermal treatments

TRNKOVÁ, Libuše, Iveta TŘÍSKOVÁ, Jan ČECHAL a Zdeněk FARKA

Základní údaje

Originální název

Polymer pencil leads as a porous nanocomposite graphite material for electrochemical applications: The impact of chemical and thermal treatments

Autoři

TRNKOVÁ, Libuše (203 Česká republika, garant, domácí), Iveta TŘÍSKOVÁ (203 Česká republika, domácí), Jan ČECHAL (203 Česká republika) a Zdeněk FARKA (203 Česká republika, domácí)

Vydání

Electrochemistry Communications, Elsevier Inc. 2021, 1388-2481

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10406 Analytical chemistry

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 5.443

Kód RIV

RIV/00216224:14310/21:00121332

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1016/j.elecom.2021.107018

UT WoS

000646982700001

Klíčová slova anglicky

Polymer pencil graphite electrode; Nanocomposite; Microporous electrodes; Siloxanes; Redox processes in chlorides

Štítky

CF CRYO, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 17. 10. 2024 17:42, Ing. Martina Blahová

Anotace

V originále

Pencil graphite electrodes are a simple, disposable, and low-cost alternative to screen-printed graphite electrodes. In terms of stability and sensitivity, pencil electrodes often outperform conventional carbon ones. This paper discusses and emphasizes the superior properties of polymer pencil graphite electrodes (pPeGEs), which can be exploited in the electrochemical analysis of molecules, such as chlorides, whose signals are missing on common graphite electrodes. The chemical and structural behaviour of pencil leads after exposure to acids (HF, HNO3, HClO4) or organic solvents (CH3CN, CH3Cl) was monitored via X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The electrochemical activity of pristine and treated pPeGEs was studied by the cyclic voltammetry (CV) responses of reversible redox probes [Fe(CN)6]3-/4- and [Ru(NH3)6]3+/2+. XPS proved the presence of siloxanes in the surface matrix of the pencil leads; this finding relates to the hydrophobic surface character of the electrodes. SEM then provided images of the pencil surfaces with microplates and flakes and revealed the removal of siloxanes upon chemical treatment. The CVs of non-dried and dried pPeGEs displayed surface changes in the polymer matrix, accompanied by water loss. Our study shows that the pPeGE retains the character of a stable graphite sensor when exposed to acids and organic solvents, except for HF and chloroform. The discovered effects explain the electrochemical processes occurring on pPeGEs and can contribute to their application in electrochemical sensing and energy storage.

Návaznosti

MUNI/A/1424/2019, interní kód MU

Název: Vývoj metod a instrumentace pro analýzu biologicky významných látek 2020

Investor: Masarykova univerzita, Vývoj metod a instrumentace pro analýzu biologicky významných látek 2020, DO R. 2020_Kategorie A - Specifický výzkum - Studentské výzkumné projekty

22020140, interní kód MU

Název: Věda v zemích V4 - výzkum nových senzorů pro diagnostiku diabetu (Akronym: Věda v zemích V4 - výzkum nových senzorů)

Investor: Mezinárodní visegrádský fond (IVF), Věda v zemích V4 - výzkum nových senzorů pro diagnostiku diabetu

90110, velká výzkumná infrastruktura

Název: CzechNanoLab

90127, velká výzkumná infrastruktura

Název: CIISB II

Citovat

TRNKOVÁ, Libuše, Iveta TŘÍSKOVÁ, Jan ČECHAL a Zdeněk FARKA. Polymer pencil leads as a porous nanocomposite graphite material for electrochemical applications: The impact of chemical and thermal treatments. Electrochemistry Communications. Elsevier Inc., 2021, roč. 126, May, s. "107018", 7 s. ISSN 1388-2481. Dostupné z: https://dx.doi.org/10.1016/j.elecom.2021.107018.

@article{1757240,
   author = {Trnková, Libuše and Třísková, Iveta and Čechal, Jan and Farka, Zdeněk},
   article_number = {May},
   doi = {http://dx.doi.org/10.1016/j.elecom.2021.107018},
   keywords = {Polymer pencil graphite electrode; Nanocomposite; Microporous electrodes; Siloxanes; Redox processes in chlorides},
   language = {eng},
   issn = {1388-2481},
   journal = {Electrochemistry Communications},
   title = {Polymer pencil leads as a porous nanocomposite graphite material for electrochemical applications: The impact of chemical and thermal treatments},
   url = {https://www.sciencedirect.com/science/article/pii/S1388248121001028},
   volume = {126},
   year = {2021}
}

TY  - JOUR
ID  - 1757240
AU  - Trnková, Libuše - Třísková, Iveta - Čechal, Jan - Farka, Zdeněk
PY  - 2021
TI  - Polymer pencil leads as a porous nanocomposite graphite material for electrochemical applications: The impact of chemical and thermal treatments
JF  - Electrochemistry Communications
VL  - 126
IS  - May
SP  - "107018"
EP  - "107018"
PB  - Elsevier Inc.
SN  - 13882481
KW  - Polymer pencil graphite electrode
KW  - Nanocomposite
KW  - Microporous electrodes
KW  - Siloxanes
KW  - Redox processes in chlorides
UR  - https://www.sciencedirect.com/science/article/pii/S1388248121001028
N2  - Pencil graphite electrodes are a simple, disposable, and low-cost alternative to screen-printed graphite electrodes. In terms of stability and sensitivity, pencil electrodes often outperform conventional carbon ones. This paper discusses and emphasizes the superior properties of polymer pencil graphite electrodes (pPeGEs), which can be exploited in the electrochemical analysis of molecules, such as chlorides, whose signals are missing on common graphite electrodes. The chemical and structural behaviour of pencil leads after exposure to acids (HF, HNO3, HClO4) or organic solvents (CH3CN, CH3Cl) was monitored via X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The electrochemical activity of pristine and treated pPeGEs was studied by the cyclic voltammetry (CV) responses of reversible redox probes [Fe(CN)6]3-/4- and [Ru(NH3)6]3+/2+. XPS proved the presence of siloxanes in the surface matrix of the pencil leads; this finding relates to the hydrophobic surface character of the electrodes. SEM then provided images of the pencil surfaces with microplates and flakes and revealed the removal of siloxanes upon chemical treatment. The CVs of non-dried and dried pPeGEs displayed surface changes in the polymer matrix, accompanied by water loss. Our study shows that the pPeGE retains the character of a stable graphite sensor when exposed to acids and organic solvents, except for HF and chloroform. The discovered effects explain the electrochemical processes occurring on pPeGEs and can contribute to their application in electrochemical sensing and energy storage.
ER  -

TRNKOVÁ, Libuše, Iveta TŘÍSKOVÁ, Jan ČECHAL a Zdeněk FARKA. Polymer pencil leads as a porous nanocomposite graphite material for electrochemical applications: The impact of chemical and thermal treatments. \textit{Electrochemistry Communications}. Elsevier Inc., 2021, roč.~126, May, s.~''107018'', 7 s. ISSN~1388-2481. Dostupné z: https://dx.doi.org/10.1016/j.elecom.2021.107018.

Podrobný výpis o publikaci